Finding the Fourth Proportional to 22,796.16, 31,473.15 and 15,638.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,796.16 : 31,473.15 = 15,638.07 : x
2. Step 2: Convert to fraction form
   22,796.16/31,473.15 = 15,638.07/x
3. Step 3: Cross multiply
   22,796.16x = 31,473.15 × 15,638.07
4. Step 4: Simplify right side
   22,796.16x = 492,179,322.82
5. Step 5: Solve for x
   x = 492,179,322.82/22,796.16
6. Step 6: Final answer
   x = 21,590.45